Description
H2O version 2.2.2 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/1 header.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/h2o/h2o/issues/1459
Third Party Advisory, VDB Entry third-party-advisory
x_refsource_jvn
https://jvn.jp/en/jp/JVN84182676/index.html
Scores
CVSS v3
7.5
EPSS
0.0347
EPSS Percentile
87.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (2)
dena/h2o
< 2.2.3
Kazuho Oku/H2O
version 2.2.2 and earlier
Published
Dec 22, 2017
Tracked Since
Feb 18, 2026